Sliding door.



D. B. BRYAN, DEC'D. M. B. BRYAN,ADM1N1STRATR| SLIDING DOOR.

APPLlcATloN F|LED1UNE\5.1914.

Patented lhx 7,1915.

2 SHEETS-SHEET l.

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IIIIILIIII D. B. BRYAN, DECD.

M. B- BRYAN.ADM|N|STRATR1X sumNG Dona. APPLICATION Fl-LED IUNE 15| 1914.4 Ll. Patented Dec. 7, 1915.

2 SHEETS-SHEET 2.

I im. E i l e 7 l aisance.

of Lexington,

amarrar nieren.,

panini. Le. Buren', rnnciiasmi, LATE 0F LEXINGTQN, KENTUCKY, BY MARY B.BRYAN',

einen co., or new Yoan, Iv. Y., a

CORPORATION OF NEW YORK. K

SLEDING- D003.

To @El ywhom 'it may concern:

Be it known that I, MARY B. BRYAN, a 'citizen of the United States, anda resident county of Fayette, and State of Kentucky,make thisapplication as ad- ;ministratrix of the estate of DANIEL. B. BRYAN,deceased, late a lcitizen of the United States and a resident of saidLemngtdn, Fayette county, Kentucky, and that said Daunen B. BRYAN,deceased, invented certain new and useful Improvements in Sliding Doors,of which the following is a specication.

The invention referred to relates to 1mprovements in doors of the' typein which a door or door sectionis mounted in a substantiallygverticalplane, in its closed position, covering the doorppening, and uponopening is swung upwardly and inwardly into 'an approximately horizontalplane above the door-opening, and to means for operating such doors.Doors of this charac* ter are particularly adapted for use in faclYtinies, freight sheds andthe like, where large doorway openings andlarge heavy doors are often required. In such doors Athe openingmovement'comprises a lift in a vertical direction and a swingingmovement from the vertical into the final horizontal position.

The object of' the present inventionis to provide devices Acalculated tofacilitate the change in direction during the opening of the door, fromthe vertical rise, or movement in one direction, to the swingingmovement into a horizontal, or dierent plane from that in which thedoorway opening is situ-Q ated.

A door of the type improvement is adapted to be applied is described inpatent to Schwemlein, 1,069,733, dated August 12, 1913, although the'present invention is, not limited in its usefulness to doors of theparticular description referred to. Such doors comprise two or moresliding panels or sections, the lower section or Sections being firstraised, in opening, into guideways formed on the facel of the upper,sectiom after which a continuance of the ylifting movement results in aSwingin of the nested sections about a sliding or rol ing 'V`pivot,fwhich movement is controlled by links pivoted te the top door sectionand the fixed frame ofvthe doorway. If, in such a struc? Specificationof Letters Fatent. Application filed lune 15, 1914.

to which the present Patented Dec. t, i915. serial no, 845,114.

ture, the supporting links make only a slight angle to the vertical,when the door is in ctosed position, a considerable effort may berequired to start the door in its swinging` movement away from thevertical, since the lifting force is exerted in a vertical direction.The present invention overcomes this diliculty by providing deviceswhereby the top of the door is pressed away from the vertical plane atthe moment whenthe inward swinging movement of the door is to begin.

ll'n the embodiment of the invention which is considered particularlyeffective these devices take the form of bell-crank levers pivoted onthe topsection of the door, which levers are caused to exert a leverageagainst the wall or iiXed member adjacent the opening, when the arms ofthe levers are contacted by members moving upwardly with a lower section'of the door, to start the inward movement of the top of the door awayfrom the vertical plane. y

Inorde'r that the invention nay be more clearly understood, attention ishereby directed to the accompanying drawings, illus- -trating certainembodiments of the invention.

In the drawings, Figure 1 is a front view of a three-section doorequipped with the present improvements, the door being in closedposition; Fig. 2 is a vertical section through the door with thesections thereof in closed position; Fig. 3 is a partial verticalsection similar to Fig. 2, in which the swinging movement of the doorhas begun., and Fig. 4 is a similar partial vertical section with thenested door sections moved into horizontal position above the doorway.

Referring to' the drawings, the door illustrated is provided with lower,intermediate and top sections 1, 2, and 3 respectively, it beingunderstood that the invention is equally 'applicable to a two-sectiondoor. Section l is slidably mounted in vertical fixed guideways 4, andsection 2 in parallel fixed guideways 5. The top section 3 is securedwithin or its formed integral with a fname or carrier 6, which isprovided with vguldeways 7 and 8, which, in the normal or closedposition of the carrier shown in F ig, .2, are in alinement with theguideways 5 and i on the door frame This constructionprniits thesections l and 2 to be moved into the alining guideways 8 and 7 of thecarrier, on the door section 3, after which the carrier with the t-hreesections contained therein is swung' into the horizontal position shownin Fig. 4, the arrangement being such that a. continuance of the liftingmovement which carries the lower sections into the carriers, swings thecarrier, together with the upper and lower door sections, about apivotal point.

In the construction illustrated, the carrier G is provided near itslower edge with rollers 9, which travel on vertical tracks or surfaces10. The carrier is supported by links 11,

`which are pivotally mounted on pins 12 carried by brackets 13 securedto the wall 1-1 above the doorway. The links are pivoted to the'carrierat 15. usually in line with the innermost carrier-guideway 8, and abovethe middle of the carrier. The carrier, in the form of door illustratedhas a rigid member 1G, usually an I-beam or other structural shape,extending across the top of the carrier and constituting an abutmentagainst which the lower door-sections strike when raised fully into thecarrier.

In the door illustrated, the construction is such that the turning ofhand crank 16, at one side of the door frame, raises door-sections 1 and2 into their guides S and 7 in alinement with section 3, after whichcontinued movement of crank 16 results in the swinging movement of thecarrier with all three door-sections nested therein, as stated. Asprocket wheel 17 is mounted on the shaft ofthe hand crank and sprocketchain 18 passes around this wheel and around a. sprocket wheel 19 on ashaft 20 carried by a bracket 21 at the upper end Fig. 1. A gear 22 onthe shaft 2O meshes with gear 23 on a shaft 24 also carried by bracket21. Sprocket wheels 25 and 26 on shaft 2-L carry sprocket chains 27 and28, the former extending downwardly along the right side of the doorframe and attached to the bottom door-section by means of a. bracket25). and the latter extending across the top of the frame. around aguide pulley or sprocket 30, and down the left side of the frame to aconnection with the bottom (huir-section by means of bracket 31. Theother ends of chains 27 and 28 are conuected'to a eounterwveight 32 atthe right side of the door frame.

In the construction illustrated. the doorsections are connected foroperation as follows:--,(bains 33 are secured to the top corners ofbottom section 1. pass around rollers 34 at the bottom of section 2, andare secured to the. lower corners of section 3. The bottoni sectionbeing raised by operation of the hand crank. section 2 will rise at halfthe speed of bottoni section 1` and the two sections will simultaneouslyarrive 0f the door 'bell-cranks about their pivots.

.fi-ame. above the hand crank, as shown in i angle which in parallelrelation to section 3, in their guides in the carrier. If a two-sectiondoor is employed instead of 4a three-section door as shown, the meansfor lifting the intermediate section just described are, of course, notneeded.

lVhen the bottom section or sections have arrived in the carrier, onopening the door, they contact abutments such as the member 1G at thetop of the carrier, so that the continuation of the lifting pressure isexerted upon the carrier itself. It is at this point that the speciicimprovements of the present invention come into play. These devices, inthe construction illustrated, are as followsz-Bellcrank levers 35 arepivoted on studs 36 carried by brackets 37 mounted on the top of carrier6 adjacent the side edges of the same and'adjacent the front, or thatedge of the door nearest to the door frame. The bell-cranks have arms3S, which in the closed position of the door extend ver tically fromtheir pivots, adjacent to the surface of the wall or frame 1l, and arms39 which, under the same conditions, lie horizontally upon the top oftop plate 16 of the carrier. Brackets l0 mounted on the top of bottomdoor-section 1 adjacent the two side edges carry rollers l1, verticallyin line Awith the horizontal arms of the bell-crank levers 35. lVhen thebottom andintermediate door-sections are raised, brackets l0 and rollers41 pass through openings in plate 1G ol the carrier, rollers 'l1 comingin contact with the under sides o'f arms 39 of the bellcranks. Thiscontact occurs shortly before door-section 1 reaches its highestposition in the carrier, and results in oscillating the Since arms 3S ofthe bell-cranks are in Contact with, or lie closelyadjacent to, wall 1l,or preferably,

vplates secured to the wall. such as plates 10 o n which rollers 9 run,as illustrated, the result of the tilting of the bell-cranks is to forcethe upper end of carrier G away from (he wall, the upper ends oi' arms3S of the bell-cranks pressing against plates 10 on the wall, andforcingthe top of the carrier inwardly b v the reaction of arms C38against the pivots of tbe bell-cranks. During this operation the carriertilts about rollers 9, the

links 1l. make with the v'ertical becoming greater as the top of thecarrier moves farther .from the wall. lVhen sections l. and 2 have movedfully into the carrier, and abulted against plate 1G, as shown in Fig.Il. the contimled lifting movement of the hand chainsl raises thecarrier as a whole, rollers il running on plates l0, and the upper endot the carrier moving inwa rdly in a curve under the control of linksll. The linal position oiI the carrier is horizontal, as illustratedinrFig. i, above the opening, with the lower end of the carrier in`contact with plates 10 or wall 14, and

comprising an upper section anda lower sec` tion mounted to overlap theupper section in opening, suspension links pivotally con'- nected tocorresponding intermediate points in the edges of' the top section, andto the v,

door frame, and s o ypositioned as'to give the door top a tendency toswing closed, a pivoted bell-crank lever secured to the top of the uppersection, havingk one arm adapted to press against the door frame, andmeans actuated by they upward movement of the lower section foroscillating said bell-Crank for imparting an initial opening movement tothe door top, substantially asset forth.

10. The combination of a door frame, a door comln'ising` an uppersection and a lower section mounted to overlap the upper section inopening, suspension links pivotally connected to correspondingintermediate points 1n theedges of thetop section, and

to the door frame, and so positioned as to glve the door top a tendencyto swing closed,

from said door frame, suspension means nor-v mally holding the door inposition to cover theV opening formed by said frame, means for raisingthe door, a bell-crank lever pivoted to the door, and means moved bysaid door-raising means into actuating contact ,with one arm of saidbell-crank lever to press the otherl arm of said lever against the dooriframe to thereby force the part of the door to which said lever ispivoted, away from the door frame, substantially as set forth. y

This specification signed and witnessed this 29th day of May, 1914. `f

'f MARY B. BRYAN,

. Adm. 0) Aestante of Dam'el B. Bry/am.

Witnesses:

. S. A. WALLACE,

. A. B. JOLLY.

